<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch">
      <el-form-item label="类别名称" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入类别名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-select v-model="queryParams.status" placeholder="文章状态" clearable>
          <el-option
            v-for="dict in dict.type.sys_normal_disable"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          plain
          icon="el-icon-sort"
          size="mini"
          @click="toggleExpandAll"
        >展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table
      v-if="refreshTable"
      v-loading="loading"
      :data= "classifyList"
      row-key="classifyId"
      :default-expand-all="isExpandAll"
      :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
    ><el-table-column prop="classifyId" label="类型Id" width="100"></el-table-column>
      <el-table-column prop="name" label="类型名称" width="240"></el-table-column>
      <el-table-column prop="type" label="类型" width="200"></el-table-column>
      <el-table-column prop="orderNum" label="排序" width="150"></el-table-column>
      <el-table-column prop="numbers" label="文章数量" width="100"></el-table-column>
      <el-table-column prop="status" label="状态" width="100">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_normal_disable" :value="scope.row.status"/>
        </template>
      </el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime" width="200">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
          >修改</el-button>
          <el-button
            v-if="scope.row.parentId <=0"
            size="mini"
            type="text"
            icon="el-icon-plus"
            @click="handleAdd(scope.row)"
          >新增</el-button>
          <el-button
            v-if="scope.row.parentId != null"
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改分类对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="600px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="24" v-if="this.openFlag ==true">
            <el-form-item label="上级分类" prop="parentId">
              <treeselect v-model="form.parentId" :options="classifyOptions" :normalizer="normalizer" placeholder="选择上级分类" />
            </el-form-item>
          </el-col>
        </el-row>

        <el-row>
          <el-col :span="24" v-if="this.openFlag ==false && form.parentId!=0">
            <!--            <el-form-item label="上级分类" prop="parentId">-->
            <!--              <span>{{form.parentId}}</span>-->
            <!--              <treeselect v-model="form.parentId" :options="classifyOptions" :normalizer="normalizer" placeholder="选择上级分类" />-->

            <!--            </el-form-item>-->
            <el-form-item label="文章分类" :rules="[{required:true, message:'请选择分类', trigger:['blur','change']}]">
              <el-select v-model="form.parentId" placeholder="请选择文章分类" >
                <el-option
                  v-for="item in classifyOption1s"
                  :key="item.name"
                  :label="item.name"
                  :value="item.classifyId">
                </el-option>
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>


        <el-row>
          <el-col :span="12">
            <el-form-item label="分类名称" prop="name">
              <el-input v-model="form.name" placeholder="请输入分类名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="orderNum">
              <el-input-number v-model="form.orderNum" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="分类状态">
              <el-radio-group v-model="form.status">
                <el-radio
                  v-for="dict in dict.type.sys_normal_disable"
                  :key="dict.value"
                  :label="dict.value"
                >{{dict.label}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listClassify, getClassify, delClassify, addClassify, updateClassify, listClassifyExcludeChild } from "@/api/article/classify";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Classify",
  dicts: ['sys_normal_disable'],
  components: { Treeselect },
  data() {
    return {
      // dialog 上级选择框
      openFlag: true,
      // 只读
      isReadOnly: true,
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 表格树数据
      classifyList: [],
      // 分类树选项
      classifyOptions: [],
      classifyOption1s:[],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部展开
      isExpandAll: true,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        name: undefined,
        status: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        parentId: [
          { required: true, message: "上级分类不能为空", trigger: "blur" }
        ],
        name: [
          { required: true, message: "分类名称不能为空", trigger: "blur" }
        ],
        type: [
          { required: true, message: "类型不能为空", trigger: "blur" }
        ],
        orderNum: [
          { required: true, message: "顺序不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询分类列表 **/
    getList() {
      this.loading = true;
      listClassify(this.queryParams).then(response => {
        this.classifyList = this.handleTree(response.data, "classifyId");
        let h=this.classifyList;
        for(let c of this.classifyList)
        {
          if(c.hasOwnProperty("children")&&c.children!=undefined)
          {
            let g=0;
            for(let ch of c.children) {
              g+=ch.numbers;
            }
            c.numbers=g;
          }

        };
        this.loading = false;
      });
    },
    /** 转换分类数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.classifyId,
        label: node.name,
        children: node.children
      };
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        classifyId: undefined,
        parentId: undefined,
        name: undefined,
        orderNum: undefined,
        status: "0"
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset();
      if (row != undefined) {
        this.form.parentId = row.classifyId;
      }
      if(row.classifyId>0)
      {
        this.openFlag=false;
      }
      else
      {
        this.openFlag=true;
      }
      this.open = true;
      this.title = "添加文章分类";
      listClassify().then(response => {
        this.classifyOptions = this.handleTree(response.data, "classifyId");
        if(row != undefined)
        {
          let tempData ={
            ancestors: "0",
            children: undefined,
            classifyId: 0,
            createBy: "",
            createTime: "",
            name: "根目录",
            orderNum: 0,
            parentId: 0,
            remark: "",
            status: 0,
            type: "0",
            updateBy: "",
            updateTime: ""
          };
          this.classifyOptions.push(tempData);
        }
      });
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      getClassify(row.classifyId).then(response => {
        this.form = response.data;
        this.open = true;
        this.openFlag=false;
        this.title = "修改文章分类";
      });
      listClassifyExcludeChild(row.classifyId).then(response => {
        let option=[];
        for(let d of response.data)
        {
          if(d.parentId==0&&d.status ==0)
          {
            option.push(d);
          }
        }
        this.classifyOption1s=option;
        option=null;
        this.classifyOptions = this.handleTree(response.data, "classifyId");
      });

    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.classifyId != undefined) {
            updateClassify(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            if(this.form.parentId==-1)
            {
              this.form.parentId =0;
            }
            addClassify(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$modal.confirm('是否确认删除名称为"' + row.name + '"的数据项？').then(function() {
        return delClassify(row.classifyId);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    }
  }
};
</script>
<style>
.small-padding{
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 0;
  line-height: 19px;
}
.el-table .cell
{
  line-height: 19px;
}
</style>
